Noxious Weeds Blog

All things noxious weeds. Written by program specialists in King County, Washington

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Tag: spotted knapweed

1 larger photo of yellow flower in field on left, 3 stacked photos on right of flowers: purple poofy, yellow with heart shaped petals, and white trumpet shaped
June 20, 2023June 20, 2025 kcweeds

Summer Weeds to Watch for

Early garlic mustard flower in March
March 17, 2020March 20, 2020 kcweeds

What’s weeding now?

June 7, 2018June 7, 2018 theweedsbeat

Noxious weeds to watch for in June

April 10, 2018April 10, 2018 kcweeds

King County’s noxious weed program tackles several high priority species in April

tansy ragwort with flowers and seeds shown with a garbage bag
September 10, 2017September 13, 2017 kcweeds

Noxious weed control tips for September

July 30, 2017July 30, 2017 theweedsbeat

Weeds to Watch out for—August 2017

June 4, 2017 theweedsbeat

Spotted Knapweed – June 2017 Weed of the Month

May 31, 2017September 5, 2018 theweedsbeat

Weeds to Watch Out For: June 2017

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kingcounty.gov/weeds

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